한국안전학회지 (Journal of the Korean Society of Safety)

  • 제31권4호
  • /
  • Pages.143-149
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  • 2016
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  • 1738-3803(pISSN)
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  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
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EFDC 모형을 이용한 댐 붕괴류 수치모의 및 매개변수 민감도 분석

Numerical Simulation of Dam Break Flow using EFDC Model and Parameter Sensitivity Analysis

  • 장철 (인천대학교 안전공학과) ;
  • 송창근 (인천대학교 소방방재연구센터)
  • Jang, Chul (Department of Safety Engineering, Incheon National University) ;
  • Song, Chang Geun (Fire Disaster Prevention Research Center, Incheon National University)
  • 투고 : 2016.06.27
  • 심사 : 2016.08.16
  • 발행 : 2016.08.31
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초록

In this study, a series of numerical simulation of dam break flow was conducted using EFDC model, and input conditions including cell size, time step, and turbulent eddy viscosity were considered to analyze parameter sensitivity. In case of coarse mesh layout, the propagated length of the shock wave front was ${\Delta}_x$ longer than that of other mesh layouts, and the velocity results showed jagged edge, which can be cured by applying fine grid mesh. Turbulent eddy viscosity influenced magnitude of the maximum velocity passing through gate up to 20% and the cell Peclet number less than 2.0 ensured no numerical oscillations.

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참고문헌

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